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Browsing Геология России by Title
Now showing items 7345-7364 of 39195
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(2003)The composition of 135 samples of astrophyllite-group minerals from 15 localities has been established by EMPA, ICP-AES, FTIR, TGA, thermal decomposition, NRA and Mössbauer spectroscopy. A standardized general formula has ...
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(2003)The crystal chemistry of 20 specimens of astrophyllite-group minerals from seven localities has been studied using a combi-nation of single-crystal X-ray analysis of the structure and electron-microprobe analyses. Members ...
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(2003)Convergent margins (oceanic and continental arcs) form one of the Earth’s key mass transfer locations, being sites where melting and transfer of new material to the Earth’s crust occurs and also where crustal materials, ...
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(2003)The objectives of this pyrolysis investigation were to determine changes in (1) oil composition, (2) gas composition and (3) gas carbon isotope ratios and to compare these results with hydrocarbons in reservoirs. Laboratory ...
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(2002)The Ural mountains preserve a late Palaeozoic collision that forms a 2500 km suture in the world's largest landmass, Eurasia. Several features of the mountain belt, in particular a well-preserved crustal root, are ...
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(2002)Sequential chemical extraction (SCE) and quantitative X-ray diffraction (QXRD) were used in combination to assess trace metal speciation and availability in sediment from two separate marshes in western Vermont, USA, one ...
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(2001)A unique diatom biostratigraphy of the Brunhes chron in Lake Baikal revealed by detailed studies of pelagic diatom paleo-assemblages, indicates that dramatic changes in insolation during the past 800 ka BP produced ...
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(2004)In the natural environment, temperature and moisture are very important parameters in stone degradation. Therefore, on 28 samples from different lithologies (magmatic, metamorphic and sedimentary rocks) thermal and hygric ...
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(2001)This paper uses constraints from experiments, thermodynamic modeling, and natural mineral assemblages to argue that Al2SiO5 "triple-point" assemblages, in which all three Al2SiO5 minerals are in stable equilibrium, are not ...
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(2004)On many volcanoes, there is evidence of a relationship between dome collapse and periods of high precipitation. We propose a mechanism for this relationship and investigate the conditions that optimize failure by this ...
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(1990)The authors have demonstrated that water-gas systems filling fault structures of seismically active regions are chemically and even isotopically unstable, not only in the period of accumulation and relaxation of elastic ...
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(2004)We estimate a global plate motion model for 17 major and minor tectonic plates solely on the basis of analysis of data from 106 globally distributed continuous GPS stations, spanning the period from January 1991 to July ...
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(1996)A method is developed to determine the response of digital seismo-graphs from transient calibration pulses. Based on linear system theory, the digital seismograph is represented by a set of first-and higher-order linear ...
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INSULATIVE PROPERTIES OF CRYSTALLINE ROCKS: ON THE PROBLEM OF HIGH-LEVEL RADIOACTIVE WASTE DISPOSAL (2001)In most countries (including Russia) where radioactive materials are used, it is suggest that high-level radioactive wastes (HLW) should be deposited in crystalline rocks. We demonstrated that basic rocks (gabbro, anorthosite, ...
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(PANGAEA, 2015-12-09)This PhD thesis focused on the analysis and application of microbial membrane lipids as biomarkers in marine sediments. Existing protocols for lipid extraction from marine sediments and biomass were modified. In addition, ...
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(2001)The authors present a general theory of propagation of electromagnetic pulse excitations in the diffusion domain, for horizontally layered media, in the form of integral hodographs of electrical and magnetic types. The ...
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(2000)The paper presents an analysis of seismic-wave propagation expressed geometrically in terms of the ray method. The objective was to describe the wave field at regular points of a ray set in the vicinity of its initial point ...
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(1989)In the present paper we demonstrate that the simultaneous analysis of fields of different geophysical types by means of inverse-problem formulations that are consistent on the statistical level expands the correctness set ...
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(2011)Th e Ypresian to Priabonian Gubs river section, in the Adygean high of the northern slope of the Caucasus, is a rare locality, in whichYpresian–Lutetian representative larger benthic foraminifera coexist with planktonic ...
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(2003)Integrated graptolite, conodont and chitinozoan biostratigraphical data is presented from the Rhuddanian through to lower Sheinwoodian of the Aizpute-41 core, Latvia. Correlation of the biozonation schemes based upon the ...
Now showing items 7345-7364 of 39195